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  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院地球与行星物理重点实验室
Energy-dependent Boundaries of Earth's Radiation Belt Electron Slot Region

文献类型：期刊论文

作者Mei, Yang2,3; Ge, Yasong2,4,5; Du, Aimin1,2,4,5; Gu, Xudong3; Summers, Danny6; Li, Xinlin7,8; Fu, Song3; Xiang, Zheng3
刊名ASTROPHYSICAL JOURNAL
出版日期2021-12-01
卷号922期号:2页码:13
ISSN号0004-637X
DOI10.3847/1538-4357/ac25ec
英文摘要The variations in radiation belt boundaries reflect competition between acceleration and loss physical processes of energetic electrons, which is an important issue for radiation belts of planets with an internal magnetic field (e.g., Earth, Jupiter, and Saturn). Based on high-quality measurements from Van Allen Probes spanning the years 2014-2018, we develop an empirical model of the energy-dependent boundaries of Earth's electron radiation belt slot region, showing that the lower boundary follows a logarithmic function of the electron energy while the upper boundary is controlled by two competing energy-dependent processes, namely compression and recovery. The compression process relates linearly to a 15 hr averaged Kp index, while the recovery process is found to be approximately proportional to time. Detailed data-model comparisons demonstrate that our model, using only the Kp index and time epoch as inputs, reconstructs the slot region boundaries in real time for 200 keV to 2 MeV electrons under varying geomagnetic conditions. Such a data-driven empirical model is prerequisite to understanding the dynamic changes of the slot region in response to both solar and geomagnetic activities. The model can be readily incorporated into future global simulations of radiation belt electron dynamics in Earth's inner magnetosphere and provide new insights into the study of Saturn's and Jupiter's radiation belt variability.
WOS关键词PITCH-ANGLE DISTRIBUTION ; PLASMASPHERIC HISS ; RESONANT SCATTERING ; INNER MAGNETOSPHERE ; OUTER ZONE ; DIFFUSION ; STORM ; CYCLOTRON ; EVOLUTION ; PARTICLE
资助项目National Key Research and Development Program of China[2016YFB0501304] ; National Key Research and Development Program of China[2016YFB0501300] ; National Natural Science Foundation of China[41774176] ; National Natural Science Foundation of China[41874080] ; National Natural Science Foundation of China[41674168] ; National Natural Science Foundation of China[41974173] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XBD41010300] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14040404] ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Natural Sciences and Engineering Research Council of Canada ; pre-research Project on Civil Aerospace Technologies - CNSA[D020103] ; pre-research Project on Civil Aerospace Technologies - CNSA[D020104] ; pre-research Project on Civil Aerospace Technologies - CNSA[D020303] ; pre-research Project on Civil Aerospace Technologies - CNSA[D020308]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000725863600001
出版者IOP Publishing Ltd
资助机构National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA
源URL[http://ir.iggcas.ac.cn/handle/132A11/102955]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Ge, Yasong
作者单位1.Macau Univ Sci & Technol, State Key Lab Lunar & Planetary Sci, Macau, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
3.Wuhan Univ, Sch Elect Informat, Dept Space Phys, Wuhan, Hubei, Peoples R China
4.Innovat Acad Earth Sci, Chinese Acad Sci, Beijing, Peoples R China
5.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
6.Mem Univ Newfoundland, Dept Math & Stat, St John, NF, Canada
7.Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA
8.Univ Colorado, Dept Aerosp Engn Sci, Boulder, CO 80309 USA
推荐引用方式
GB/T 7714		 Mei, Yang,Ge, Yasong,Du, Aimin,et al. Energy-dependent Boundaries of Earth's Radiation Belt Electron Slot Region[J]. ASTROPHYSICAL JOURNAL,2021,922(2):13.
APA Mei, Yang.,Ge, Yasong.,Du, Aimin.,Gu, Xudong.,Summers, Danny.,...&Xiang, Zheng.(2021).Energy-dependent Boundaries of Earth's Radiation Belt Electron Slot Region.ASTROPHYSICAL JOURNAL,922(2),13.
MLA Mei, Yang,et al."Energy-dependent Boundaries of Earth's Radiation Belt Electron Slot Region".ASTROPHYSICAL JOURNAL 922.2(2021):13.

入库方式： OAI收割

来源：地质与地球物理研究所

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